/Engine/Source/Runtime/InteractiveToolsFramework/Public/BaseGizmos/GizmoActor.h
Add standard circle component to Actor, generally used for axis-rotation
static [UGizmoCircleComponent](API\Runtime\InteractiveToolsFramework\BaseGizmos\UGizmoCircleComponent) * AddDefaultCircleComponent ( [UWorld](API\Runtime\Engine\Engine\UWorld) * World, [AActor](API\Runtime\Engine\GameFramework\AActor) * Actor, [UGizmoViewContext](API\Runtime\InteractiveToolsFramework\BaseGizmos\UGizmoViewContext) * GizmoViewContext, const [FLinearColor](API\Runtime\Core\Math\FLinearColor) & Color, const FVector & PlaneNormal, float Radius )